Waste Water Engineering
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is?

Pneumatic ejector
Reciprocating pump
Centrifugal pump
None of these

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Waste Water Engineering
Stone ware pipes are

Hydraulically efficient because of their smooth interior surface
Highly impervious
Especially suited to pressure pipes
Highly resistant to sulphide corrosion

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Waste Water Engineering
The pressure exerted by

All listed here
The internal pressure if any, causes tensile stress in the pipe material
The sewage when running full from inside, is called internal pressure
Pressure sewers are designed to be safe in tension

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